So I was planning on doing a sff gaming build, but I have decided to go ATX instead. Going to go with the Fractal Design - Define R4 case.

Anyway the reason I am switching is that I want to look at saving a bit of cash to keep the wife happy. I will be going with the intel i5 3570k, already have the corsair H60 cooler. I need some insight into the various mobos that I am looking at.
Cost cutting measure include cheaper mobo, 128GB SSD instead of 240, Gigabyte 660TI OC, instead of 670 OC.
Going full ATX so adding an SLI 660TI OC in the future will be easier, so obviously SLI is a must.